Hot-water bag or bottle.



UNrrED sin-Tas PATENT ernten. I

RICHARD A. WHALL, OF'READING, MASSACHUSETTS, ASSIGNOR4 OFONE-HALF TO MET- ROPOLITAN AIR` GOODS COMPANY, OF MASSACHUSETTS.

Oli READING, MASSACHUSETTS, A CORPORATION Hor-WATER BAG on BOTTLE.

Specication ofLetters Patent.

vPatented. July 2, 1907.

Application filed April Z1, 1906. Serial No. 3l3,016.

whereby a bag may be produced at a minimum expense, and of great durability and freedom from liabil ity to leakage.

The invention also has for its object to provide improved means for protecting the user of the bag. against injury from the heated surface, by providing the bag with a covering of fibrous material, such as felt, provided with perforations which permit the outward radiation of heat from the bag, the portions of the felt surrounding the perforations preventing direct contact between the heated rubber surface of the bag and the skin of the user. s

The invention consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification,-Figure 1 represents a side elevation of a water bag embodying my invention. Fig. 2 representsa section on line 2-2 of Fig. 1. Figs. 3 and/i represent fragmentary sectional views 'showing different stages of the operation of making my improved bag.

The same letters'of reference indicate the same parts in al1 the figures. 1

In the drawings, a a represent two pieces which coristitute the major portion of a hot water bag, the said piecesy being formed from frictioned fabric, coated on -both sides with unvulanized rubber, and-having their marginal portions placed-together side by side, to form a joint. Said marginal portions are united by fasteningdevices which are preferably stitches b extending par` allel with the edges of the side vpieces to positively'r maintain the joint. This operation is performed before the vulcanizing operation, the frictioning material of the side pieces being unvulcanized. y

c represents a packing strip, which is V-shaped in,

cross section, and is in'contact with the portions ofthe l verging from the apex, andi being in close contact with the side pieces a o, the arrangement being such that the pressure of water contained in the bag Vtends to press the packing strip outwardly against the inner sides of the side pieces Va a, thus preventing the contents of the bottle from flowing outwardly to the stitches b.

d represents a binding strip composed of suitable fabric, which is internally frictioned, this strip being folded over the edges of the side pieces c c, and caused l to overlap and cover the stitches b, as shown in Fig. 2.

The above-described parts are assembled in the manner shown, prior to the vulcanizing operation, which operation causes the permanent adhesion of the packing strip c and binding strip d to the side piecesa a. A

It will be seen that the above-described construction is extremely simple, as well as durable, and free from liability to leakage. The fastening devices positively connect the margins of the side pieces, making the joint permanent, while the packing strip prevents the entrance of liquid into the joint, and its access to the fastening devices. i

f represents a protective covering of brous material applied to the external surface of the bag, the said covering being composed of felt or other suitable fibrous material which has less heat conductivity than rubber. The covering f is provided with numerous perforations f which expose small areas ofthe rubber, and are so numerous that they expose considerable areas of heat radiating surface. The exposed area/s are protected by the imperforate portions of the felt, the perorations being so small that the exposed portions of the rubber cannot come in contact with the users skin. The perorations form heat-conducting passages extending outwardly from the sides of the bag, thus facilitating the radiation of heat from the bag. I-have shown the protective covering only in Fig. 2.

I claim:

1. A water bag comprising side pieces, placed in contact with each other side by side, and stitched together at their margins,'a Vlshaped packing strip secured to the inner sides of the side pieces and extending parallel with the line of stitches, and an internally frictioned binding strip folded over the edges of the pieces and covering the said stitches, the said parts being united by vuicanization.

2. A water bag having heat radiating outer surfaces and protecting coverings therefor, composed of perforated sheets of fibrous material, the perforations in said sheets ,exposing portions of the heat radiating surfaces of the bag, and forming unobstructed heat-conducting passages.

In testimony whereof I have ainxed my signature in presence of vtwo witnesses.

' RICHARD A. WHALL.

v Witnesses:

' c. F. Brown,

E. BA'rcHmLDnB. 

